TH-2 - Freeing Up Tx CH5 (DCP)

[joe@tech-mp]

For tandem use, currently we have been recommending that transmitter channel 5 be used for DCP control.

CH5 is normally setup as a slave pmix off of the elevator channel. This allows you to control the ratio (blend) of DCP vs elevator cyclic conveniently by adjusting the mix gains in your Tx.

Once you get the mix to where it "feels" good it may not be necessary to change it again.

With this in mind,

Just connect the TH-2 DCP input (black lead) to the gyro then the gyro to the elevator output of the Rx.
You may need a "Y" lead to do that. This accomplishes what the pmix does, but without the adjustability from your Tx

It should work fine. Keep in mind that the DCP gain setting (TH-2) will need to be lower than with the other setup. Just measure the DCP travel in the first setup and then set the DCP gain to match it for the new setup.

Comments/suggestions are welcome....


Joe

www.techmodelproducts.com

[v22chap]

Sounds like it should work great and then those that don't have to many channels will have one open for lights ,, door ,,etc :thumbup:

[TimG13096]

Reading the TH-2 instruction hoping to set up my CH46 over the holiday weekend.

A little confused on using the receiver/gyro elevator output of for DCP through a Y cable instead of in the TH-2 software selecting elevator as the input for DCP.

Why set the TH-2 for CH5 input and then pipe in elevator to the input?

Tim
Denver, CO

[v22chap]

because the directions say so..... don't try to figure it out ,,, just read and reread the directions as Joe has it all working right .....;):thumbup:
DCP elevator is going to control the collective for elevator not the elevator .... well actually you get a mix of both ,,,, but mostly differentail collective pitch (DCP)

[TimG13096]

because the directions say so..... don't try to figure it out ,,, just read and reread the directions as Joe has it all working right .....;):thumbup:
DCP elevator is going to control the collective for elevator not the elevator .... well actually you get a mix of both ,,,, but mostly differentail collective pitch (DCP)

Reading the directions is where I am getting confused. In the most current directions I can find
"DCP Input Source/Gain

Modify Constants - 10

Functions:

Select DCP input source
Adjust gain -100..100 percent

This is used to select which input is used for DCP. CH5 or elevator.
The input gain is adjustable from -100 to + 100, only when the elevator is selected as the input.

Use menu 18 to set the input gain when CH5 is selected."

Then on this forum the advise to set the software to use CH5, but run the wiring to the elevator output of the receiver/gyro.

Guess I am trying to understand whether Joe's instuction document or web posts are the way to go.

Tim
Denver, CO

[v22chap]

Joes instruction manaul is the right way ... What he was explaining in this thread was an idea to try helping someone that had a radio (I think the DX 6 ) problem with using Ch - 5 ,,or they needed another channel to do some scale things ...

Do it the way the instruction manual tells you and you will be fine . === unless you have this radio :arggg: